Cao Qing, Doctor of Medicine, Chief Physician, Master's Supervisor, Director of the Department of Infectious Diseases. She primarily focuses on the diagnosis and treatment of pediatric infectious diseases. She has accumulated extensive clinical experience in managing recurrent respiratory tract infections, complex and critical infections, drug-resistant bacterial infections, infections in immunocompromised patients, and post-transplant infections. She has developed a comprehensive diagnostic approach and treatment strategy to implement standardized and precision therapy for infectious diseases. She also has considerable clinical experience in diagnosing and treating various complex infectious diseases and chronic EBV infections. She currently serves as the Deputy Head of the Pediatric Group of the Shanghai Medical Association's Infectious Diseases Society; Secretary of the Shanghai Medical Association's Pediatric Committee; Member of the Infectious Diseases Committee of the Chinese Medical Association's Pediatric Branch; Secretary of the Shanghai Medical Association's Infectious Diseases and Chemotherapy Society; Member of the Expert Committee on the Rational Use and Management of Antibiotics in Shanghai; and Member of the Expert Panel for the Assessment of Adverse Reactions to Vaccination in Shanghai, among other roles. Overseas Training: She previously studied at Seattle Children's Hospital in the United States, focusing on the diagnosis and treatment of infectious diseases and the prevention and control of hospital-acquired infections. Main Research Directions: Fever of unknown origin, diagnosis and treatment of infectious diseases, the relationship between infection and host immunity, mechanisms of bacterial resistance, diagnosis and treatment of infectious diseases, vaccination assessment for special populations, and clinical application evaluation of fecal microbiota transplantation in children.